Status of main inspection / restoration work at the Kashiwazaki Kariwa Nuclear Power Station following the Niigataken Chuetsu-oki Earthquake in 2007
(4-week schedule as of November 8, 2007): Inspection Completed, Red text: Changes from last week, Blue text: Information added this time
Unit

Unit 1

Unit 2

Unit 3Ceiling crane in thereactor building

Completed on 9/18

Completed on 10/4

Completed on 9/14

Refueling machine

Inspection scheduled to Completed on 10/16
commence for 10/24-11/14

Facility / workInternals（＊）
Openinspection
on reactors

Phase 1

Completed on 8/23

Phase 2Completed on 10/1
- preparation scheduled tocommence on 10/2
- Inspection scheduled tocommence on 11/24

Phase 3
Fuel/Control Rod

Reactor PressureVesselOpeninspectio
n onturbines

Reactor Well
Ceiling crane in theturbine building
TurbineMain exhaust ducts

Inspection scheduled
10/6-11/9
to Inspection scheduled
10/24-12/10

Unit 5for Completed on 9/28

Unit 6- Completed on 10/2

for Completed on 10/19-Reactor opening completed
on 10/24- Reactor well pour watercompleted- Phase 1/2 started 11/3

Inspection scheduled for
9/27-11/12-Reactor opening completed -Reactor opening scheduledon 10/29
for 11/5-12-Reactor well pour water -Inspection commencement
completed on 10/26
scheduled on 11/13-Phase 1/2 commencement
scheduled on 11/14

Inspection scheduled after
Phase 1/2 & Phase 3- Preparation scheduled for- Preparation completed on
10/22-11/10
10/29
Preparation
completedon
Preparation
scheduledfor
Inspection on Supporting- Inspection on Supporting- Inspection on Supporting - Structure
Inspection
onSupporting
11/7
11/5-9scheduled for - Inspection on Supporting - Inspection on Supporting
Structure completed onStructure completed onStructure completed on
11/12-14
10/30
11/7
11/2Structurescheduledfor
Structurescheduledfor- Inspection of nozzle etc.
-Inspection of nozzle etc.
11/8-12
11/9-12commencement
commencement
scheduled on 11/14
scheduled on 11/7
Completed on 10/26

Completed on 8/24

Completed on 10/30

Completed on 10/5

Completed on 10/17

Openingandinsideinspection scheduled for
11/9 - early December

Openingandinsideinspection scheduled for
11/28 - the end ofDecember
Completedoutdoor
sections on 9/14
Completed
Exterior
inspection on ducts in thetrenches on 10/5

Openingandinsideinspection scheduled for
11/21 - mid December

Openingandinsideinspection scheduled for
11/8 – mid December
Completedoutdoor
sections on 9/14
Completed
Exterior
inspection on dusts in thetrenches on 10/5

Openingandinsideinspection scheduled for Completed on 10/25
10/24 – mid December
Completedoutdoor
sections on 9/14
Completed
Exterior
inspection on dusts in thetrenches on 10/5
Inspection started on 11/3

Completed on 9/14

Main Generator
Exterior
inspection

Inspection scheduled
commence on 11/12

Unit 4Completed on 9/14

Completed on 10/4

Unit 7
Completed on 9/6
Completed on 9/27
Completed
Reactoropening on 10/8
-Fuel taking out completed
on 10/23-Phase 1/2 commencement
scheduled on mid November

Inspection scheduled after
Reactor well inspection- Preparation completed on
10/25- Inspection on Supporting
Structure completed on
10/29-Inspection of nozzle etc.
commencement scheduledon 11/14
Inspection scheduled for
11/8 – mid November
Completed on 10/4
Openingand
insideinspection scheduled for
10/8 – the end of November

Inspection started on 11/2

Completed on 11/1

- Preparation scheduled for
11/16-19
Mainpreparation - Inspection completed on - Preparation scheduled forOil- Preparation scheduled to Ex-factory- Inspection commencementtransformer extraction /commence on 10/29-11/9 started on 11/1
10/26
11/30-12/3
for 11/20-22
inner- Inspection scheduled for- Ex-factory preparation - Inspection commencement - scheduled
Ex-factory
preparation
inspection
11/19-22
scheduled for 10/18-11/26
scheduled on 12/4
commencement
scheduled on 11/23-2A:Inspection scheduled forExterior
10/22-23, 11/8-9
inspection-2A:Inspection scheduled for 3A：completed on 9/4
10/29-30, 11/15-16
4A,4B:
5A,5B:
In-house- 3A: Inspection completed Inspection commencement Inspection commencement
Transformer transformer
Oil
2A:Inspection scheduled foron 10/22timing being coordinatedtiming being coordinatedextraction / - 1A：Completed on 9/4
11/9-10
Ex-factory timing being
inner- 1B：Completed on 10/12
2B:Inspection scheduled for
coordinatedinspection
11/16-17- 3B:Completed Ex-factoryon 9/20- Preparation scheduled forExterior
11/9-15inspection- Inspection scheduled on Completed on 10/19
Excitation
11/16-17, 11/22-23
Inspection commencement Inspection commencementtransformer
completed on timing being coordinatedtiming being coordinatedOil- Preparation scheduled for Inspection
11/3
extraction / Completed on 10/18
11/16-21
timingbeinginner- Inspection scheduled for Ex-factory
coordinatedinspection
11/22-23
Processing of water leakage on theCompleted on 10/12
B5F level of the reactor combinationbuilding（＊）Phase 1 (Inspection of the upper reactor):- Completed on 10/6
- Completed on 9/21
- Ex-factory completed on - Ex-factory completed on
10/31
10/25

- 6A：Completed on 9/25
- 7A: Inspection scheduled- 6B：Completed on 9/26
for 11/13-14- Ex-factory completed on - 7B: Inspection scheduled
10/25
for 11/7-10

The internals of a reactor are visually checked from above with an underwater camera, before the implementation of further inspection on the area extending from the reactor pressure vessel flange to the upper grid plate, with the aimof checking the internal status of the reactor.

Phase 2 (Inspection of the mid reactor --- the reactor core):

An underwater camera is used to visually check the area extending from the upper grid plate to the core support plate, as well as the outer circumference of the core shroud (annulus).

The dryer and separator,

removed from the core, are also examined.
Phase 3 (Inspection of the bottom of the reactor):

Inspection is carried out on the area extending from the core support plate to the bottom of the reactor, after removing control rods, fuel supports and other items that could interfere with the inspection.